JSFiddle - React, Tailwind, and code Playground

HTML

<form>
 <table>
   <tr>
       <td name="id">1</td>
       <td><input type="text" name="field1_1"/></td>
       <td><input type="text" name="field2_1"/></td>
       <td><button class="myButton">Save</button></td>
   </tr>
   <tr>
       <td name="id">2</td>
       <td><input type="text" name="field1_2"/></td>
       <td><input type="text" name="field2_2"/></td>
       <td><button class="myButton">Save</button></td>
   </tr>
   <tr>
       <td name="id">3</td>
       <td><input type="text" name="field1_3"/></td>
       <td><input type="text" name="field2_3"/></td>
       <td><button class="myButton">Save</button></td>
   </tr>
 </table>
</form>

JavaScript

$(function() {
    $( ".myButton" ).click(function (event) {
        event.preventDefault();
        var params =$(this).closest('tr').find('input').serialize();
        alert(params);
    });
});